Throttle-governor for internal-combustion engines.



G. G. 'RIOTTE, DECD. M. L. RIOTTE, ADMINISTRATBIX.

THROTTLE GOVERNOR FOP. INTERNAL COMBUSTION ENGINES.

APPLICATION FILED FEBJG, 1912. 1,094,167. Patented Apr. 21, 19M

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can 0. Norm, nnonnsnn, LATE or JERSEY CITY, NEW JERSEY,- BY MARIE 1..

RIOTTE, ADMINISTRATRIX, or YONKERS,-NEW roux, assrenon r0 smmaann moroncons'rnucrron COMPANY, or JERSEY CITY, NEW. JERSEY,- A conropa- TION OFNEW JERSEY.

THROTTLE-GOVERNOR FOR INTERNAI-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented-Apr. 21, 1914.

Application filed February 16, 1912. Serial No. 678,057.

,an exceedingly simple and effective means for automatically partiallyshutting ofi the same to reduce the volume of gas'admitted to the engineso as to prevent racing Whenever the load on theengine is quicklyreduced.

In the drawings Figure 1 is a vertical sectional view of certain partsof the invention. Fig. 2 is a side elevation of other parts thereof.

In the form shown in the drawings, the apparatus is particularly adaptedfor operation in connection with engines having two or more cylinders,the gas pipe having two branches. This, however, is immaterial,

, since the invention is applicable to engines having any number ofcylinders.

1 represents the feed pipe connected with a vaporiZer, or other sourceof fuel supply, conventionally illustrated at 2.

3 is the distributing end of the feed pipe 1, in this instance arrangedat an angle to the latter. The pipe 3 has the branches 3"3 which maylead to diflerent cylinders (not shown) of a gas engine.

1 is a throttle, in this instance a sleeve, arranged with the pipe 3 andadapted to move up and down in the passage leading from the pipe 1 topipe 3, so as to vary the size or area of said passage for the purposeof adbut in the form, it preferably comprises a bell-crank lever 7pivoted at 8 and operatively connected with the lower end of the valvestem 5. i

9 is a rod connecting one end of the bellcrank lever 7 with ahand-operated throttle lever. The manual controlling means in itspreferred form comprises a block 10 slidable upon the. rod 9 and heldbetween two springs 11-12 surrounding the rod 9,)which in turn areprovided with adjusta le abutments 1314 respectively. The springs 11-12will tend to hold the block 10 in a certain position on the rod 9.

15 is a pivoted throttle lever and having an arm 17 pivotally connectedwith the block 10. 18 is a segment rack which may be toothed 1n theusual way, and with which the throttle lever 15 may be locked at anydesired position, one position being shown in solid lines Fig. 2,another position being shown .in dotted lines in said figure. I

By shifting the throttle lever 15, the .bellcrank 7 is operated to shiftthe throttle 4 to the desired position to admita certain pre-.determined volume of gas to the engine. To automatically control thethrottle 4, or shut the same down, in the event the load should be takenoff the engine momentarily or suddenly, I provide a piston. 19 moving ina- 'nected with-the piston 19. In the event-of any quick change in thetension of gas within the pipe 3, for example in case the vacuum shouldhe suddenly increased, as by a tendency of the engine to race, from anycause,

the piston 19 will be sucked downwardly or in a direction to move thethrottle 4 to shut off the gas. This movement is also transmittedthrough the bell-crank lever? and rod 9 to one'pf the abutments 13 or14;, in this instance the abutment 14, which latter will be caused tomove toward the block 10,

which is held stationary by the throttle lever 15. This movement of theabutment 14 compresses the spring 12. As soon as the engine resumes itsnormal work and the tendency to race ceases, the vacuum within the pipe3will be lessened, whereupon the spring 12 restores the rod 9 to itsnormal position, and similarly the throttle 4 is also restored to itsposition of manual adjustment, whatever that may be. The cylinder 20 maybe provided witha suitable protecting cap 22, having a proper vent 23 topermit thepiston to move. This vent may be comparatively small, so as toguarantee a relatively slow movement of the piston, when it is desirableto have such slow'movement,

. but in some cases it may be found that the cap 22 is entirelyunnecessary. It will thus be seen that means is provided toautomatically move the throttle in both directions without regard to theparticular position at which the throttle has been manually adjusted.The first automatically effected movement is, of course, in a directionto reduce the area of the gas passage, while the second automaticallycontrolled movement is merely a return movement, opening the passage tothe desired or predetermined extent. The spring 11 acts as a yieldingabutment at all times, and is only used by preference. By varying theadjustment of the abutment 14, the degree of tension required to operatethe piston may be varied. The lower end of the valve 4: may have small'notches or recesses to prevent the entire cuttin oif of as. 1

\ hatIcaimis:

1. In a controlling apparatus for internal combustion engines, a gaspipe having a feeding end and a distributing end, a movable throttlebetween said ends, means for manually varying the position of thethrottle and for yieldingly holding the same in an adjusted or normalposition, in combination with means operated by an increase in airtension in the distributing end of.

said gas pipe for moving the throttle from its normal position in adirection to reduce the area of. the passage'controlled thereby, andmeans to return said throttle again to its normal position when saidincrease in tension in said distributing end abovenormal ceases.

2-. In a controlling apparatus for internal combustion engines, a gaspipe having a feeding end and adistributing end, a movablethrottlebetween said ends, means for manually varying the position ofthe throttle and for yieldingly holding the same in an adjusted ornormal position, in combination with means operated by an increase inair tension in the distributing end of said gas pipe for moving thethrottle 'fronrits normal position in a direction to reduce the area ofthe passage controlled thereby, and means to return said throttle againto its normal position when said increase in tension in saiddistributing end above normal ceases, said tension-controlled meanscomprising a cylinder and a piston, with means of connecting the pistonand the throttle, said cylinder being in open and uniform communicationat all times with the distributing end of the feed pipe.

3. Ina controlling apparatus for internal combustion engines, a gas pipehaving a feeding end and a distributin end, a movable throttle betweensaid en s, means for manually varying the position of the throttle andfor'yieldingly holding the same in an adjusted or normal position, incombination with means operated by an increase in air tension in thedistributing end of said gas pipe for movingthe throttle from its normalosition in a direction to reduce the area of the passage controlledthereby, means to return said throttle again to its normal position whensaid increase in tension in said distributing end above normal ceases,said tension-controlled means comprising a cylinder and a iston, withmeans of connection between tie piston and the throttle, said cylinderbeing in open and uniform communication at all times withthedistributing end of the feed pipe, said means for returnin malposition comprising a spring.

4. In a controlling apparatus for internal combustion engines, a gaspipe having a feeding end and a distributin end, a movable throttlebetween said en s, means for manually varying the position of thethrottle and for yieldingly holding the same in an adjusted or normalposition, in combination with means operated by an increase in airtension in the distributing end of said gas pipe for moving the throttlefrom its norma fposition in a direction to reduce the area 0 the passagecontrolled thereby, means to return said throttle again to its normalposition when said increase in tension in said distributing end abovenormal ceases, said tension-controlled means comprising a cylinder and aiston, with means of connection between t e piston and the throttle,said cylinder being in open and uniformcommunication at all times withthe distributing end of the feed pipe, said means for returning thethrottle to 1ts normal position comprising a spring carried and movablewith the manually operable means for ad'usting the throttle to thedesired normal iosition.

5. In a con rolling apparatus in internal combustion engines, a' gaspipe having a feeding end and a distributing end, a movable throttlelo'cated between said ends, a cylinder, a piston movable therein, theinterior of saidxcylinder being in communication with the gas pipe at apoint beyond the throttle so as to be directly influenced the throttleto its northe throttle, a piston in the cylinder and the aforesaidpiston without disturbing the means for connecting the piston with thenormal setting of the throttle. throttle whereby the latter will bemoved MARIEL RIOTTE by the movement of the former and means for varyingthe normal operative position Admmwtmtm of Carl t deceased of thethrottle, said means including a yield- Witnesses:

ing connection whereby the throttle may be B. E. SMYTHE,' movedautomatically by the movement of J. SGHELZ, Jr.

